A review of EDM Process for difficult to cut materials

V. L. Jagtap

Abstract


Electrical discharge machining (EDM) is the process of removing material from a conductive work piece by applying a high-frequency pulsed, electrical current to it via a solid, shaped electrode or EDM wire. The electrode never touches the work piece but instead discharges its current through an insulating dielectric fluid (water or oil) across a very small spark gap upon voltage, amperage, electrode material, and it and dielectric type. The spark is plasma hot, and melts the work piece material before it. EDM is one of the earliest non-traditional machining processes. EDM process is based on thermoelectric energy between the work piece and an electrode. In electrical discharge machining (EDM), a process utilizing the removal phenomenon of electrical discharge in dielectric, the working fluid plays an important role affecting the material removal rate and the properties of the machined surface. Choosing the right dielectric fluid is critical for successful operations. The paper describes the review of EDM process for difficult to cut or hard materials

Keywords


Electrode, dielectric fluid, non conventional machining etc.

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References


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